Should schoolteachers be armed?

In the wake of the school shooting in Parkland, Fla., last week, President Trump suggested that one solution that would prevent future shootings would be to arm teachers in the schools. Yahoo News anchor Stephanie Sy talks with Jim Irvine, chairman of the Buckeye Firearms Association and Foundation, and Mary Kusler, senior director for the National Education Association's Center for Advocacy, about the pros and cons of this proposal.